2 * Copyright 2008 ZXing authors
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package com.google.zxing.client.result;
19 import com.google.zxing.Result;
21 import java.util.Vector;
24 * Parses contact information formatted according to the VCard (2.1) format. This is not a complete
25 * implementation but should parse information as commonly encoded in 2D barcodes.
29 final class VCardResultParser extends ResultParser {
31 private VCardResultParser() {
34 public static AddressBookParsedResult parse(Result result) {
35 // Although we should insist on the raw text ending with "END:VCARD", there's no reason
36 // to throw out everything else we parsed just because this was omitted. In fact, Eclair
37 // is doing just that, and we can't parse its contacts without this leniency.
38 String rawText = result.getText();
39 if (rawText == null || !rawText.startsWith("BEGIN:VCARD")) {
42 String[] names = matchVCardPrefixedField("FN", rawText, true);
44 // If no display names found, look for regular name fields and format them
45 names = matchVCardPrefixedField("N", rawText, true);
48 String[] phoneNumbers = matchVCardPrefixedField("TEL", rawText, true);
49 String[] emails = matchVCardPrefixedField("EMAIL", rawText, true);
50 String note = matchSingleVCardPrefixedField("NOTE", rawText, false);
51 String[] addresses = matchVCardPrefixedField("ADR", rawText, true);
52 if (addresses != null) {
53 for (int i = 0; i < addresses.length; i++) {
54 addresses[i] = formatAddress(addresses[i]);
57 String org = matchSingleVCardPrefixedField("ORG", rawText, true);
58 String birthday = matchSingleVCardPrefixedField("BDAY", rawText, true);
59 if (!isLikeVCardDate(birthday)) {
62 String title = matchSingleVCardPrefixedField("TITLE", rawText, true);
63 String url = matchSingleVCardPrefixedField("URL", rawText, true);
64 return new AddressBookParsedResult(names, null, phoneNumbers, emails, note, addresses, org,
65 birthday, title, url);
68 private static String[] matchVCardPrefixedField(String prefix, String rawText, boolean trim) {
69 Vector matches = null;
71 int max = rawText.length();
73 i = rawText.indexOf(prefix, i);
77 if (i > 0 && rawText.charAt(i - 1) != '\n') {
78 // then this didn't start a new token, we matched in the middle of something
82 i += prefix.length(); // Skip past this prefix we found to start
83 if (rawText.charAt(i) != ':' && rawText.charAt(i) != ';') {
86 while (rawText.charAt(i) != ':') { // Skip until a colon
90 int start = i; // Found the start of a match here
91 i = rawText.indexOf((int) '\n', i); // Really, ends in \r\n
93 // No terminating end character? uh, done. Set i such that loop terminates and break
95 } else if (i > start) {
97 if (matches == null) {
98 matches = new Vector(3); // lazy init
100 String element = rawText.substring(start, i);
102 element = element.trim();
104 matches.addElement(element);
110 if (matches == null || matches.isEmpty()) {
113 return toStringArray(matches);
116 static String matchSingleVCardPrefixedField(String prefix, String rawText, boolean trim) {
117 String[] values = matchVCardPrefixedField(prefix, rawText, trim);
118 return values == null ? null : values[0];
121 private static boolean isLikeVCardDate(String value) {
125 // Not really sure this is true but matches practice
127 if (isStringOfDigits(value, 8)) {
132 value.length() == 10 &&
133 value.charAt(4) == '-' &&
134 value.charAt(7) == '-' &&
135 isSubstringOfDigits(value, 0, 4) &&
136 isSubstringOfDigits(value, 5, 2) &&
137 isSubstringOfDigits(value, 8, 2);
140 private static String formatAddress(String address) {
141 if (address == null) {
144 int length = address.length();
145 StringBuffer newAddress = new StringBuffer(length);
146 for (int j = 0; j < length; j++) {
147 char c = address.charAt(j);
149 newAddress.append(' ');
151 newAddress.append(c);
154 return newAddress.toString().trim();
158 * Formats name fields of the form "Public;John;Q.;Reverend;III" into a form like
159 * "Reverend John Q. Public III".
161 * @param names name values to format, in place
163 private static void formatNames(String[] names) {
165 for (int i = 0; i < names.length; i++) {
166 String name = names[i];
167 String[] components = new String[5];
170 int componentIndex = 0;
171 while ((end = name.indexOf(';', start)) > 0) {
172 components[componentIndex] = name.substring(start, end);
176 components[componentIndex] = name.substring(start);
177 StringBuffer newName = new StringBuffer(100);
178 maybeAppendComponent(components, 3, newName);
179 maybeAppendComponent(components, 1, newName);
180 maybeAppendComponent(components, 2, newName);
181 maybeAppendComponent(components, 0, newName);
182 maybeAppendComponent(components, 4, newName);
183 names[i] = newName.toString().trim();
188 private static void maybeAppendComponent(String[] components, int i, StringBuffer newName) {
189 if (components[i] != null) {
191 newName.append(components[i]);